In recent years long-wavelength infrared (LWIR) hyperspectral imagery has significantly improved in quality and become much more widely available, sparking interest in a variety of applications involving remote sensing of surface composition. This in turn has motivated the development and study of LWIR-focused algorithms for atmospheric retrieval, temperature-emissivity separation (TES) and mat...

The Los Menucos District, Rio Negro, Argentina, provides an excellent case history of a complex epithermal gold system mapped and explored using a combination of field mapping and multispectral/hyperspectral remote sensing. The district offers a host of argillic and advanced argillic alteration minerals at the surface, many of which are difficult to identify visually. A strategy utilizing regio...

The PRISMA (Hyperspectral Precursor of the Application Mission) satellite Italian Space Agency (ASI) is in orbit since March 2019. hyperspectral data have found applications many disciplines including environmental monitoring, agriculture, forest and grassland mapping, land use cover hydrology, geology, glaciology. In this study imagery are evaluated for characterization surface outcrop quartz-...

Abstract Advanced argillic minerals, as defined, include alunite and anhydrite, aluminosilicates (kaolinite, halloysite, dickite, pyrophyllite, andalusite, zunyite, topaz), diaspore. One or more of these minerals form in five distinctly different geologic environments hydrolytic alteration, with pH 4–5 to <1, most at depths <500 m. (1) Where an intrusion-related hydrothermal syste...

Halotrichite has been identified in geothermal fields of the Kambalny-Pauzhetka-Koshelev region, Bolshoi Semiachik complex, and Mutnovsky volcano (Kamchatka, Russia). forms efflorescence on soils heated up to 70°C, around steam-gas vents boiling springs. Tschermigite, rozenite, szomolnokite, gypsum, alunogen, barite, melanterite, hexahydrite, minerals copiapite, alunite voltaite groups were fou...

Article history: Received 5 February 2010 Received in revised form 21 September 2010 Accepted 21 September 2010 Available online 18 October 2010 Editor: T.M. Harrison

Aluminium oxyhydroxysulfates and hydroxides are known to precipitate from mining-generated acidic, neutral basic pH drainage waters that enriched in potentially toxic metal(loid)s. Their role as medium-term (1 year) sinks of Al, As, Cu Ni at values 4, 7 10 was assessed using batch experiments. X-ray diffraction analysis showed basaluminite initially formed 4 7, whereas 10, bayerite or nordstran...